Municipal drainage pipeline splicing device

Abstract

The utility model discloses a municipal drainage pipeline parallel connection device which comprises two adjacent municipal drainage pipelines, the two municipal drainage pipelines are connected through a parallel connection device, the parallel connection device comprises butt joint pieces connected to the ends of the municipal drainage pipelines in a sleeved mode respectively, and sealing rings are arranged on the end walls of the butt joint pieces in a surrounding mode. The outer sides of the two sealing rings are sleeved with contraction pieces, and locking assemblies are arranged on the outer sides of the contraction pieces. According to the municipal drainage pipeline parallel connection device, tight sealing connection between adjacent municipal drainage pipelines is achieved, leakage at the connecting position is effectively prevented, due to the overall structural design, the device is convenient to install, pipeline splicing can be rapidly completed, and the municipal drainage pipeline parallel connection device has great significance in improving construction efficiency and drainage safety of a municipal drainage system.

Description

Technical Field

[0001] This utility model belongs to the technical field of municipal drainage devices, and in particular relates to a municipal drainage pipe parallel connection device. Background Technology

[0002] In urban infrastructure construction, municipal drainage systems play a crucial role in the timely removal of urban sewage and rainwater. The stability and reliability of their operation directly affect the quality of life of urban residents and the normal operation of the city. As a key link in the drainage system, the performance of the connection devices has a decisive impact on the sealing, leak-proof capability, and service life of the entire drainage system.

[0003] Currently, common municipal drainage pipe connection methods mainly include socket connection, welding connection and flange connection. However, due to the complex and changeable underground environment, soil settlement, groundwater pressure fluctuations and pipe thermal expansion and contraction occur frequently. These factors can lead to uneven stress at pipe connection points, and sealing failure can occur within a few years, causing sewage leakage. Once sewage leaks, it will not only pollute the surrounding soil and groundwater, but may also cause road collapse, seriously threatening urban public safety and the ecological environment.

[0004] Therefore, there is an urgent need for a municipal drainage pipe parallel connection device that is simple in structure, easy to install, has good sealing performance, and has a wide range of applications, in order to solve the above-mentioned problems in the existing technology and improve the construction efficiency and operational stability of the municipal drainage system. Utility Model Content

[0005] The purpose of this utility model is to provide a municipal drainage pipeline connection device that addresses the problems of uneven stress and sealing failure at the connection points in the face of complex and variable underground environments, which can lead to sewage leakage, environmental pollution, and threats to urban public safety.

[0006] The present invention achieves the above objectives through the following technical solution: a municipal drainage pipe parallel connection device, comprising two adjacent sets of municipal drainage pipes, wherein the two sets of municipal drainage pipes are connected by a parallel connection device;

[0007] The parallel connection device includes connecting parts that are respectively sleeved on the ends of the municipal drainage pipe. A sealing ring is provided around the end wall of the connecting part. A shrinking part is sleeved on the outside of the two sets of sealing rings. A locking component is provided on the outside of the shrinking part.

[0008] Furthermore, the connecting component includes a sleeve portion that mates with the municipal drainage pipe. The inner wall of the sleeve portion cavity is provided with a limiting protrusion. The end of the sleeve portion is provided with a docking portion. The sealing ring is embedded in the docking portion, and the outer diameter of the sealing ring is larger than the outer diameter of the docking portion.

[0009] Furthermore, the shrink member is made of rubber, and several shrink grooves are evenly distributed on the outer side wall of the shrink member.

[0010] Furthermore, the locking assembly includes two sets of retaining rings that are rotatably arranged relative to each other, and the ends of the two sets of retaining rings are provided with clamping members, which are engaged with each other by adjusting bolts.

[0011] Furthermore, the inner diameter of the retaining ring is smaller than the outer diameter of the shrinking member, and the inner wall of the retaining ring is provided with a corrugated anti-slip texture.

[0012] Furthermore, a fixing base is provided at the bottom of the fastening member, the fixing base is fixed to the outer wall of the retaining ring, and the fastening member is rotatably mounted on the fixing base.

[0013] Beneficial effects: This utility model has a reasonable design, simple and stable structure, and strong practicality, and has the following beneficial effects:

[0014] 1. Excellent sealing performance: The sealing ring set on the end wall of the mating parts, together with the outer shrinking part and locking component, forms a multi-seal structure. When the locking component tightens the shrinking part, it can apply uniform pressure to the sealing ring, so that the mating parts fit tightly together, effectively preventing the sealing failure caused by changes in the underground environment. Even in the face of soil settlement, groundwater pressure fluctuations, etc., it can ensure that the connection maintains good sealing performance for a long time and avoid sewage leakage.

[0015] 2. Convenient and efficient installation: The parallel connection device adopts a socket-type connector, which can be quickly connected to the end of the municipal drainage pipe by the construction personnel. Then, the pipe connection can be completed by adjusting the adjusting bolt of the locking component, which greatly shortens the installation time, reduces the construction difficulty, and improves the construction efficiency of municipal drainage projects.

[0016] 3. Stable and reliable structure: The inner wall of the connecting part of the fitting is equipped with a limiting protrusion, which can effectively limit the axial displacement of the pipeline and enhance the stability of the connection. The corrugated anti-slip texture of the inner wall of the snap ring tightly engages with the shrink fitting. Combined with the tightening action of the fastener and adjusting bolt, the entire parallel connection device can still maintain a stable structure when subjected to water flow impact or external pressure, and is not easy to loosen or fall off.

[0017] 4. High adaptability: This parallel connection device has high compatibility with pipe materials. Whether it is PVC pipe or metal pipe, a reliable connection can be achieved, which expands the application range of the device and meets diverse municipal drainage engineering scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the parallel connection device of this utility model;

[0020] Figure 3 This is a schematic diagram of the mating structure at the docking part of this utility model.

[0021] In the diagram: 1-municipal drainage pipe, 2-parallel connection device;

[0022] 201-Matching part, 202-Sealing ring, 203-Contraction part, 204-Locking assembly;

[0023] 2011-Socket part, 2012-Limiting protrusion, 2013-Dating part, 2031-Shrinkage groove, 2041-Snap ring, 2042-Tightening part, 2043-Adjusting bolt. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1:

[0026] Combination Figure 1-3 The municipal drainage pipe connection device shown includes two sets of municipal drainage pipes 1 that are adjacent and need to be connected. The circular pipe structure of the municipal drainage pipe 1 is used to carry and transport urban sewage and rainwater. The two sets of municipal drainage pipes 1 are reliably connected by a specially designed connection device 2. The connection device 2 is designed to ensure good sealing and stability at the pipe connection.

[0027] The connecting device 2 includes two connecting parts 201 for connecting the municipal drainage pipe 1. The connecting parts 201 are made of high-strength engineering plastic or metal and have a hollow cylindrical structure. The internal cavity size is precisely matched with the outer diameter of the municipal drainage pipe 1 to ensure a tight fit. A sealing ring 202 is arranged around the end wall of the connecting part 201 facing the other connecting part 201. A shrinkage member 203 is fitted on the outside of the sealing rings 202 on both sets of connecting parts 201. The length of the shrinkage member 203 covers the area where the two sets of sealing rings 202 are located. A locking component 204 is installed on the outermost side of the shrinkage member 203. The locking component 204 is used to compress the shrinkage member 203 inward to make the components fit tightly together and achieve a good sealing effect.

[0028] In this embodiment, the connecting member 201 includes a sleeve portion 2011 that mates with the municipal drainage pipe 1, forming a cylindrical cavity that precisely matches the outer diameter of the municipal drainage pipe 1. To enhance the stability of the connection, limiting protrusions 2012 are evenly distributed along the circumferential direction on the inner wall of the sleeve portion 2011 cavity. When the municipal drainage pipe 1 is inserted into the sleeve portion 2011, the limiting protrusions 2012 can be embedded into the pipe end, effectively preventing axial displacement of the pipe through mechanical limiting. The end of the sleeve portion 2011 extends into a connecting portion 2013. The sealing ring 202 is made into an annular structure, and its inner diameter is tightly fitted with the outer diameter of the connecting portion 2013. Moreover, the outer diameter of the sealing ring 202 is larger than the outer diameter of the connecting portion 2013. When the shrinking member 203 is in action, the excess part of the sealing ring 202 will be squeezed and deformed, filling the tiny gaps at the connection and forming a multi-layer sealing barrier to ensure that the connection has excellent waterproof performance.

[0029] In this embodiment, the shrinkage component 203 is made of rubber, which has good anti-aging properties and can be used stably for a long time in humid and corrosive underground environments. In order to enhance the deformation capacity and shrinkage uniformity of the shrinkage component 203 under stress, several shrinkage grooves 2031 are evenly distributed on its outer side wall. These shrinkage grooves 2031 are arranged in a ring around the outer surface of the shrinkage component 203. This design allows the shrinkage component 203 to shrink and deform more smoothly inward when pressure is applied by the outer locking component 204, and evenly transmits the pressure to the internal sealing ring 202, thereby enhancing the sealing effect and ensuring the sealing and stability of the municipal drainage pipe connection.

[0030] In this embodiment, the locking assembly 204 includes two sets of retaining rings 2041 that are rotatably arranged relative to each other. The retaining rings 2041 are made of high-strength stainless steel and have been treated with anti-rust coating to adapt to the underground humid and corrosive environment. Each set of retaining rings 2041 has a semi-circular structure. The two sets of retaining rings 2041 are hinged to achieve relative rotation, ensuring that the retaining rings 2041 can still rotate flexibly after multiple opening and closing operations. The ends of the two sets of retaining rings 2041 are provided with clamping members 2042. The two sets of clamping members 2042 are engaged by adjusting bolts 2043. The adjusting bolts 2043 pass through the threaded holes of the two sets of clamping members 2042 in sequence and are screwed with matching hexagonal nuts at the ends. When the adjusting bolts 2043 are rotated with an Allen wrench, the nuts will push the clamping members 2042 closer to each other, thereby causing the two sets of retaining rings 2041 to tighten, applying uniform radial pressure to the shrinking member 203, so as to achieve a firm lock and reliable seal at the connection of the municipal drainage pipe.

[0031] In this embodiment, the inner diameter of the retaining ring 2041 is smaller than the outer diameter of the shrinkage member 203, ensuring that the retaining ring 2041 generates sufficient radial pressure on the shrinkage member 203 during the tightening process. It is important to note that this difference in inner diameter should not be too large, otherwise it may cause excessive compression of the shrinkage member 203 and create a slight gap at the mating point of the retaining ring 2041. The inner wall of the retaining ring 2041 is provided with a corrugated anti-slip texture, which can increase the coefficient of friction between the two without damaging the rubber material of the shrinkage member 203, effectively preventing the retaining ring 2041 from slipping or shifting during the locking process, ensuring that the tightening pressure on the shrinkage member 203 is stable and uniform, thereby achieving long-term sealing and stable connection at the municipal drainage pipe connection.

[0032] In this embodiment, a fixed base is provided at the bottom of the fastener 2042. The fixed base is fixedly connected to the retaining ring 2041. The fastener 2042 can rotate on the fixed base, ensuring that the fastener 2042 can not only stably transmit the locking force under the traction of the adjusting bolt 2043, but also adapt to the connection requirements of different angles through free rotation, thus ensuring the precise adjustment and reliable operation of the locking assembly 204.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A municipal sewer pipe splicing device comprising two adjacent groups of municipal sewer pipes (1), characterized in that: The two sets of municipal drainage pipes (1) are connected by a parallel connection device (2); The parallel connection device (2) includes a connecting piece (201) respectively fitted onto the end of the municipal drainage pipe (1). A sealing ring (202) is provided around the end wall of the connecting piece (201). A shrinking piece (203) is fitted on the outside of the two sets of sealing rings (202). A locking component (204) is provided on the outside of the shrinking piece (203).

2. A municipal drainage pipe coupling device according to claim 1, characterised in that: The connecting part (201) includes a sleeve part (2011) that mates with the municipal drainage pipe (1). The inner wall of the sleeve part (2011) is provided with a limiting protrusion (2012). The end of the sleeve part (2011) is provided with a docking part (2013). The sealing ring (202) is embedded in the docking part (2013), and the outer diameter of the sealing ring (202) is larger than the outer diameter of the docking part (2013).

3. A municipal drainage pipe coupling device according to claim 2, wherein: The shrinkage member (203) is made of rubber, and several shrinkage grooves (2031) are evenly distributed on the outer side wall of the shrinkage member (203).

4. A municipal drainage pipe coupling device as claimed in claim 3, wherein: The locking assembly (204) includes two sets of retaining rings (2041) that are rotatably arranged relative to each other. The ends of the two sets of retaining rings (2041) are provided with clamping members (2042), and the two sets of clamping members (2042) are engaged with each other by adjusting bolts (2043).

5. A municipal drainage pipe parallel connection device according to claim 4, characterized in that: The inner diameter of the retaining ring (2041) is smaller than the outer diameter of the shrinking member (203), and the inner wall of the retaining ring (2041) is provided with a corrugated anti-slip texture.

6. A municipal drainage pipe parallel connection device according to claim 5, characterized in that: The bottom of the fastening member (2042) is provided with a fixed base, which is fixed to the outer wall of the retaining ring (2041), and the fastening member (2042) is rotatably mounted on the fixed base.

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